1223150041221 has 24 divisors (see below), whose sum is σ = 1724055992064. Its totient is φ = 771242722560.

The previous prime is 1223150041213. The next prime is 1223150041247. The reversal of 1223150041221 is 1221400513221.

It is a happy number.

It is not a de Polignac number, because 1223150041221 - 2³ = 1223150041213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1223150041191 and 1223150041200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223150048221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 272940 + ... + 1587701.

It is an arithmetic number, because the mean of its divisors is an integer number (71835666336).

Almost surely, 2^{1223150041221} is an apocalyptic number.

It is an amenable number.

1223150041221 is a deficient number, since it is larger than the sum of its proper divisors (500905950843).

1223150041221 is a wasteful number, since it uses less digits than its factorization.

1223150041221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1861289 (or 1861270 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 1223150041221 its reverse (1221400513221), we get a palindrome (2444550554442).

The spelling of 1223150041221 in words is "one trillion, two hundred twenty-three billion, one hundred fifty million, forty-one thousand, two hundred twenty-one".